2 28 The Ohio Naturalist. [Vol. VIII, No. 2, 



of the third vein with a long appendage; legs brown, apexes of 

 the front tibiae and the tarsi of all the legs, especially beyond the 

 metatarsi, darker. Abdomen brown, a middorsal stripe and an 

 irregular spot on each side of each segment gray, but these grav 

 markings are not well defined nor conspicuous, narrow posterior 

 border of each segment gray. 



Male. Head large,, line of separation between the large and 

 small facets well defined, otherwise this sex is like the female. 



Specimens of both sexes taken at Puerto Barrios, Guatemala, 

 from twigs and branches of mangrove, growing just at the edge 

 of the water. Nearly related to T. cribellum but differing from 

 it in color and in having a wider front. 



Tabanus texanus n. sp. Length 12 to 14 millimeters. A 

 species much like T. costalis in appearance. Eye with a single 

 purple band ; thorax with stripes not very plainly marked ; costal 

 cell of the wing plainly infuscated; abdomen with three series of 

 yellowish triangles. 



Female. Antenna yellow with the annulate portion of the 

 third segment black; first segment slender, third with a distinct 

 angle near the middle of the upper side of the basal portion; 

 palpi yellowish, thick at the base, narrowed toward the tip and 

 nearly as long as the proboscis. Front rather wide with parallel 

 sides ; face and front clothed with yellow dust ; frontal callosity 

 nearly as wide as the front, square, shining black and with an 

 unconnected spot above. Thorax grayish yellow above an^l 

 with evident stripes. Wing hyaline, costal cell distinctly infus- 

 cated. Front coxa yellow, except at apex, other coxae and all 

 the femora brown ; basal half of the front tibiae and all the other 

 tibiae except the apexes yellow; tarsi brownish. Abdomen with 

 three series of yellow triangles separated by drak brown areas. 

 The triangle at the middle of each segment has its base on the 

 posterior margin of its segment and also reaches the anterior 

 border where it connects with the triangle which precedes; the 

 lateral triangular spots have an oblique appearance and plainly 

 reach the whole length of their respective segments. 



Male. Head rather large; eyes plainly divided into areas of 

 large and small facets. Color as in the female. 



A mlae and female taken at Galveston, Texas, in May, by 

 Dr. F. H. Snow. 



Chrysops separatus n. sp. Length 8 millimeters. Body 

 black, wing with costal margin, crossband and apical spot black, 

 apical spot entirely separated from the crossband. 



Female. Antenna elongate, first segment reddish brown at 

 base, black at apex, second and third black, third longer than the 

 other two combined. Cheeks, middle of the face, region around 

 the antennae and the sides of the front clothed with a yellow dust. 

 Facial and frontal callosities and vertex shining black. Thorax 



